I'm probably missing something obvious here so please bare with me. I have set up the check_sip command and opened the port on the server that I am trying to monitor, however when I run the check command from Nagios I get a no response. Does anyone know what I have missed.
Output of running command from nagios pluginfolder
SIP timeout: No response from SIP server after 15 seconds
If that doesn't work, I'd check your firewall settings, ensuring that your XI server and your SIP server have the necessary firewall permissions
If that doesn't help, posting your /usr/local/nagios/var/nagios.log may help. Your SIP server may also have logs of the failed transaction if the firewall is properly permissive.
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The Nagios server does not have anything that sticks out, in fact it doesn't even have the attempt to check nrpe on the agent machine and the agent machine doesn't have a nagios.log file